From: Stefan Sperling <stsp@stsp.name>
Subject: update dwqe(4) Tx descriptor macros
To: tech@openbsd.org
Date: Thu, 25 Apr 2024 15:06:43 +0200

As done for Rx descriptor bits, update Tx descriptor macros in
peraration for work on Tx checksum offloadng.

ok?

 M  sys/dev/ic/dwqereg.h  |  26+  3-

1 file changed, 26 insertions(+), 3 deletions(-)

diff acbcad7e8c92b826303706e6ebdc8aee83ca9f40 7333c53dc8702d8c89e2cd075e71c986711a5afa
commit - acbcad7e8c92b826303706e6ebdc8aee83ca9f40
commit + 7333c53dc8702d8c89e2cd075e71c986711a5afa
blob - d96db35702ca0f67b3f5e0f908cfc0d4cf692a10
blob + 8b0d4a8e8f4070d367a0967b7c789eb37ccedbb5
--- sys/dev/ic/dwqereg.h
+++ sys/dev/ic/dwqereg.h
@@ -227,14 +227,37 @@ struct dwqe_desc {
 	uint32_t sd_tdes3;
 };
 
-/* Tx bits */
+/* Tx bits (read format; host to device) */
+#define TDES2_HDR_LEN		0x000003ff	/* if TSO is enabled */
+#define TDES2_BUF1_LEN		0x00003fff	/* if TSO is disabled */
+#define TDES2_VLAN_TIR		0x0000c000
+#define   TDES2_NO_VLAN_TAGGING		(0x0 << 14)
+#define   TDES2_VLAN_TAG_STRIP		(0x1 << 14)
+#define   TDES2_VLAN_TAG_INSERT		(0x2 << 14)
+#define   TDES2_VLAN_TAG_REPLACE	(0x3 << 14)
+#define TDES2_BUF2_LEN		0x3fff0000
+#define TDES2_TX_TIMESTAMP_EN	(1 << 30)	/* if TSO is disabled */
+#define TDES2_TSO_EXTMEM_DIS	(1 << 30)	/* if TSO is enabled */
 #define TDES2_IC		(1U << 31)
-#define TDES3_ES		(1 << 15)
-#define TDES3_DE		(1 << 23)
+#define TDES3_TCP_PAYLOAD_LEN	0x0003ffff	/* if TSO is enabled */
+#define TDES3_FRAME_LEN		0x00007fff	/* if TSO is disabled */
+#define TDES3_CIC		0x00030000	/* if TSO is disabled */
+#define   TDES3_CSUM_DISABLE			(0x0 << 16)
+#define   TDES3_CSUM_IPHDR			(0x1 << 16)
+#define   TDES3_CSUM_IPHDR_PAYLOAD		(0x2 << 16)
+#define   TDES3_CSUM_IPHDR_PAYLOAD_PSEUDOHDR	(0x3 << 16)
+#define TDES3_TSO_EN		(1 << 18)
 #define TDES3_LS		(1 << 28)
 #define TDES3_FS		(1 << 29)
 #define TDES3_OWN		(1U << 31)
 
+/* Tx bits (writeback format; device to host) */
+#define TDES3_ES		(1 << 15)
+#define TDES3_DE		(1 << 23)
+/* Bit 28 is the LS bit, as in "read" format. */
+/* Bit 29 is the FS bit, as in "read" format. */
+/* Bit 31 is the OWN bit, as in "read" format. */
+
 /* Rx bits (read format; host to device) */
 #define RDES3_BUF1V		(1 << 24)
 #define RDES3_BUF2V		(1 << 25)